Reverberatory furnace.



No. 645,!82. Patented Mar. 13, !900. H. PAHAUT. REVERBERATOBY FUBNACE. A iatic med Aug. o, 1898.

2 Sheets-Sheet l,

(No Model.)

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UNITED STATES PATENT, OFFICE.

HENRI PAl-IAUT, OF TOUILLE, FRANCE.

REVERBERATORY FURNACE.

SPECIFICATION forming part of Letters Patent No. 645,182, datecl March 13, 1900.

Application filed August 10, 1898. Serial No. 688377, (No model.)

To all whom it may concrn:

Be it known that 1, HENRI PAHAUT, a citizen of the Republic of France, residing at Touille, Haute Garonne, France, have in- Vented certain new and useful Improvements in Reverberatory Furnaces, of which the following is a specification.

The present invention relates to a n ultiple furnace with various ovens in which provi-- sion is made for the complete utilization of heat, economy of labor, and convenience in working and cleaning.

In the accompanying drawings, forming a part of my application, Figure 1 is a vertical section of the furnace on a plane passing through its longitudinal axis. Fig. 2 is a horizontal section of same online M N of Fig. 1. Fig. 3 is a partial cross-section on line a; a; of Fig. 1. Fg. 4 is a detail showing the operation of the grates. Fig. 5 shows the shovels employed in my furnace, and Fig. 6 is a cross-section on line y y of Fig. 1.

The furnace forming the subject of this application consists generally of a fire-box, a soldering furnace or oven, an oven for heating iron plates for tongues, an oven for heating sheet-iron, an oven for annealing or softening sheet-iron plates in an inclosed space, and, finally, a chamber for heating the air before it reaches the fire-box.

As shown in the drawings, the fire-box A is formed in the upper part of the front end of the furnace and is provided with a grate formed in two sections, each of which is composed of grate-bars H, fixed on two cross-bars L L, the ends of which are perforated to receive ashaft M', upon which they are wedged. To the end of each shaft M' is Secured an arn N', carrying a balance-weight O. Each of the shafts M' is supported by two bearings P, in which they are so journaled that for cleaning the grate the two parts composing the latter can be rocked to throw off the ashes into the ash-box below. To hold the fuel in the fire-box during such cleaning, the furnace has in its front wall a plurality of apertures ?I above the grate, into which shovels I are introduced to support the fuel.

The fuel is thrown into the fire-box through a side door D', and hot air for combustion is introduced into said box in a manner to be described.

The fiame produced in the fire box passes over a bridge Q at the rear of the fire-box and into the reverberatory. furnace B back of said bridge, which is preferably used as a soldering-furnace and is provided with openings E" and E', and at the rear end of this furnace are two small bridges Q' Q", arranged' at a conparatively short distance from each other and formin g a chamber for heating iron plates for tongues and which is provided with a side door for introducing and withdrawing the plates.

Back of the bridge Q"isa chamber D, having a flat bottom, constituting the oven for heating sheet-iron. At the rear end of this oven is the rear wall of the furnace, in which a large opening is provided for introducing and withdrawing the sheets, the said opening being closed by means of a door R, which is operated by a rod r, a lever S, and a handle s, as clearly shown in Fig." 1.

At the rear end of the bottom of the oven D is a downwardly-extending aperture T, through which the fiame passes after traversing the oven or furnace D and enters a fourth furnace E, arranged below the furnace D and adapted to receive the case J, containing the plates to be softened. This case is placed on rollers j, by which it may be easily pushed into and drawn out of the furnace through a suitable opening in the rear wall of the furnace, said opening being nor,- mally closed by a movable door V. At 'the front end of the furnace E a flue W is provided in the wall, through which the burned gases escape into the chimney.

Below the floor of the soldering-furnace B or within the brick Construction forming such floor is a chamber G, which serves to heat the air for combustion. This air is introduced into said chamber through the pipe A' either by natural or forced draft and after being heated by the walls of the chamber enters the ash-box of the fire-box through a passage B', provided with a damper C' to regulate the admission of the hot air as may be desired.

The chamber G is preferably provided with a lining g, as shown in Fig. l.

The furnace thus constructed is strength ened in the usual manner by transverse and longitudinal brace-rods.

IOO

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A furnace of the character described, composed of a, fire-box, a furnace or 'oven communicating therewith, a. second furnace or oven communicating with the first named, a, i'ear furnace or oven communicating with the second, and a fonrth fur-mace or oven placed below and connected With the rear fnrnace just named, said fourth furnaee having a chimney connection, substantially as set forth.

2. A furna ce of the character described, composed of a, fire-box, afurnace or oven communicating therewith, a second furnace communicating with the first named, a, third furnace communicating with the second, bridges extending transversely between said ovens, and a fourth oven below the third oven and comrnu nicating therewith by a vertical aperture, and provided at the bottom with an opening into the chimney, all of said furnztces being provided with suitable openings and doors therefor, sbstantially as set forth.

3. A furnace of the character described, com posed of a fire-box, a f urn ace or oven communicating therewith, a Second furnaee com municating With the first, a third furnace communicating with the second, zt fourth furnace below the third furnace and communicating therewith and with the chirnney, an ash-box 'below the fire-box, a, chamber for heating the air for combustion in the rear end of and communcating With said ash-box; and means for introducing air into said chamber, substantially as set forth.

4. A furnace of the character described, composed of a fire-box, a furnace communicating therewith, a second furnace communicatng with the first, a third furnace communicating with the second, a fourth fnrnace below the third and communicating therewith and with the chimney, an ash-box below the fire-box, a, charnber for heating the air for combnstion, in the rem' end of and conmnnicating with said ash-box, a damper for controlling the outfiow of air froni said chamber, and means for introducing airnto said chamber, substantially as set forth.

HENRI PAHAUT. Witnesses:

GLECRE, LAFFONS. 

